WTEC II ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL
P–24 Copyright © 1998 General Motors Corp.
APPENDIX P — INPUT/OUTPUT FUNCTIONS
WARNING!
These schematics show the intended use of the specified controls features which
have been validated in the configuration shown. Any miswiring or use of these
features which differs from that shown could result in damage to equipment or
property, personal injury, or loss of life. ALLISON TRANSMISSION IS NOT
LIABLE FOR THE CONSEQUENCES ASSOCIATED WITH MISWIRING
OR UNINTENDED USE OF THESE FEATURES.
DIFFERENTIAL CLUTCH REQUEST
USES: Provides for operator ON/OFF control of the differential locking clutch in the MD 3070PT transmission
transfer case.
VARIABLES TO SPECIFY: None
VOCATIONS: Various. This function is required for all MD 3070PT transmissions and used only with that
model.
Figure P–23. Differential Clutch Request
E1
NC
COM
VIM
WIRE 163
DIFFERENTIAL
CLUTCH REQUEST
WIRE 161B
SIGNAL GROUND
WIRE 125
DIFFERENTIAL CLUTCH INDICATOR
Relay shown de-energized
SWITCHED
POWER
DASH
SWITCH
NO
D1
V05028
DIFF
CLUTCH
13
14
ECU
VIW
CONNECTOR
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